Design of Wireless Monitoring Environment System Based on AVR SCM

2013 ◽  
Vol 744 ◽  
pp. 532-535
Author(s):  
Chun Wu Wang ◽  
Chun Ling Liu ◽  
Zheng Kun Qin
Keyword(s):  
Radio Frequency Identification ◽  
High Frequency ◽  
Data Communication ◽  
Wireless Transmission ◽  
Wireless Data ◽  
High Frequency Signal ◽  
Control Center ◽  
Wireless Monitoring ◽  
Communication Function ◽  
Frequency Identification

The system had achieved a wireless data communication function using AVR SCM as a control center and basing on radio frequency identification technology. The transmitting terminal of system produces a high frequency signal through capacitance connecting three point type oscillator. And the encoded signal will be transmitted after high-frequency carrier modulated. While after the receiving terminal receive the signal through antenna, and the signal after a series processes including amplification, detection, rectification, voltage comparison will be processed by SCM. The system includes temperature humidity sensor, clock generator chip, photosensitive element, could detect the surrounding environment signal and wireless transmit. The paper elaborates the soft and the hardware realizing specific course of the wireless transmission system. It has an important meaning for the wireless transmission technique.

scholarly journals An Internet of Things Based Bed-Egress Alerting Paradigm Using Wearable Sensors in Elderly Care Environment

Sensors ◽  
2019 ◽  
Vol 19 (11) ◽  
pp. 2498 ◽  
Author(s):  
Muhammad Awais ◽  
Mohsin Raza ◽  
Kamran Ali ◽  
Zulfiqar Ali ◽  
Muhammad Irfan ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Radio Frequency Identification ◽  
Elderly Care ◽  
Wearable Sensors ◽  
Clinical Settings ◽  
System Delay ◽  
Wireless Data ◽  
Control Center ◽  
Timely Response ◽  
Frequency Identification

The lack of healthcare staff and increasing proportions of elderly population is alarming. The traditional means to look after elderly has resulted in 255,000 reported falls (only within UK). This not only resulted in extensive aftercare needs and surgeries (summing up to £4.4 billion) but also in added suffering and increased mortality. In such circumstances, the technology can greatly assist by offering automated solutions for the problem at hand. The proposed work offers an Internet of things (IoT) based patient bed-exit monitoring system in clinical settings, capable of generating a timely response to alert the healthcare workers and elderly by analyzing the wireless data streams, acquired through wearable sensors. This work analyzes two different datasets obtained from divergent families of sensing technologies, i.e., smartphone-based accelerometer and radio frequency identification (RFID) based accelerometer. The findings of the proposed system show good efficacy in monitoring the bed-exit and discriminate other ambulating activities. Furthermore, the proposed work manages to keep the average end-to-end system delay (i.e., communications of sensed data to Data Sink (DS)/Control Center (CC) + machine-based feature extraction and class identification + feedback communications to a relevant healthcare worker/elderly) below 1 10 th of a second.

scholarly journals Longest-Range UHF RFID Sensor Tag Antenna for IoT Applied for Metal and Non-Metal Objects

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5460 ◽  
Author(s):  
Franck Kimetya Byondi ◽  
Youchung Chung
Keyword(s):  
Wireless Sensor Networks ◽  
Radio Frequency Identification ◽  
High Frequency ◽  
Wireless Sensor ◽  
The Internet ◽  
Uhf Rfid ◽  
Rfid Tag ◽  
Frequency Identification ◽  
The Internet Of Things ◽  
Read Range

This paper presents a passive cavity type Ultra High Frequency (UHF) Radio Frequency Identification (RFID) tag antenna having the longest read-range, and compares it with existing long-range UHF RFID tag antenna. The study also demonstrates mathematically and experimentally that our proposed longest-range UHF RFID cavity type tag antenna has a longer read-range than existing passive tag antennas. Our tag antenna was designed with 140 × 60 × 10 mm3 size, and reached 26 m measured read-range and 36.3 m mathematically calculated read-range. This UHF tag antenna can be applied to metal and non-metal objects. By adding a further sensing capability, it can have a great benefit for the Internet of Things (IoT) and wireless sensor networks (WSN).

System for the Management of Raw Materials Based on RFID Technology

2013 ◽  
Vol 371 ◽  
pp. 797-801 ◽  
Author(s):  
Octavian Ionescu ◽  
Gabriela Cristina Ionescu
Keyword(s):  
Production Process ◽  
Radio Frequency Identification ◽  
High Frequency ◽  
Raw Materials ◽  
Material Balance ◽  
Storage Tanks ◽  
Rfid Technology ◽  
Uhf Rfid ◽  
Frequency Identification ◽  
Radio Frequency Identification Device

The system presented in this article has been developed in order to solve several problems occurred during uploading raw materials in the storage tanks of a dry mix mortars plant and to keep an accurate material balance of raw materials introduced in the production process. The proposed approach was to implement a UHF, RFID (Ultra High Frequency, Radio Frequency Identification Device) system consisting of tags on the intake of the uploading pipes and outlets of the transportation trucks and a UHF, RFID Writer/Reader with four antennas in the proximity of uploading and to create an associate database for tracking the uploaded materials. The newly developed system has been successfully operationally tested in a dry mix mortar plant nearby Ploiesti.

Development of compact inductive coupled meander line RFID tag for near-field applications

2016 ◽  
Vol 9 (4) ◽  
pp. 757-764 ◽  
Author(s):  
Abhishek Choudhary ◽  
Krishan Gopal ◽  
Deepak Sood ◽  
Chandra Charu Tripathi
Keyword(s):  
Radio Frequency ◽  
Radiation Pattern ◽  
Radio Frequency Identification ◽  
High Frequency ◽  
Near Field ◽  
High Frequency Band ◽  
Rfid Tag ◽  
Frequency Identification ◽  
Meander Line ◽  
System Operating

The development of compact radio frequency identification (RFID) tag is the key requirement for wireless tracking of precious small size goods/packages in transport. A design of compact meander line tag antenna having inductive coupling feed is presented for RFID system operating at ultra high frequency band of865–867 MHz. The size of the proposed tag antenna is43 mm × 10 mm, and is designed using Higgs 4 IC chip (made Alien Technology, USA) having impedance of20.55− j191.45 Ωat centre frequency866 MHz.The antenna characteristics such as impedance, radiation pattern, bandwidth, and effect of ground on gain and tag size are analyzed and found to closely match with the simulated values. The observed value of reading range varies from87.5 to 35 cmsdepending on mounting on non-metal and metal packages, respectively.

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